Show a correct numerical setup for calculating the

number of moles of CO2 (gram-formula mass =

44 g/mol) present in 11 grams of CO2.

0.25 moles of CO2 is present in 11 grams of CO2.

Explanation:

A mole represents the number of chemical entities in an element or molecule.

Number of moles of an element or molecule is determined by the formula:

The Number of moles (n) = weight of the atom given : atomic or molecular weight of the one mole of the element or molecule.

Themolar mass of one mole of carbon dioxide is:

12 + (16*2)

= 44 gram/mole

The given weight is 44 grams of carbon dioxide.

Putting the values in the equation,

n = 11 gms:44 gms / mole

n = 0.25 mole